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Ammonium benzoate, a white powder-like substance, is the ammonium salt of benzoic acid. [1] This compound is prepared by the reaction of benzoic acid and ammonia.
NACE International Standard TM0208 defines volatile corrosion inhibitor (VCI) as a chemical substance that acts to reduce corrosion by a combination of volatilization from a VCI material, vapor transport in the atmosphere of an enclosed environment, and condensation onto surface in the space, including absorption, dissolution, and hydrophobic ...
A corrosion inhibitor or anti-corrosive is a chemical compound added to a liquid or gas to decrease the corrosion rate of a metal that comes into contact with the fluid. [1] The effectiveness of a corrosion inhibitor depends on fluid composition and dynamics .
Anodic inhibitors and cathodic inhibitors are the two main categories of corrosion inhibitors. While cathodic inhibitors act as catalysts to slow down corrosion, anodic inhibitors protect metal surfaces by acting as physical barriers. They can also be divided into organic and inorganic corrosion inhibitors based on their chemical composition. [1]
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Cationic head groups also increase the disinfecting properties of household cleaners. Some common cationic surfactants head groups include amines and quaternary ammonium ions. Among the many types of surfactants, cationic surfactants are very useful corrosion inhibitors due to their protective effectiveness in neutral and acidic media. [9]
Benzotriazole is an effective corrosion inhibitor for copper and its alloys by preventing undesirable surface reactions. It is known that a passive layer, consisting of a complex between copper and benzotriazole, is formed when copper is immersed in a solution containing benzotriazole.
HOAT coolants typically mix an OAT with a traditional inhibitor, usually silicates. [32] An example is Zerex G05, which is a low-silicate, phosphate free formula that includes the benzoate inhibitor. [23] A HOAT coolant can have a life expectancy as high as 10 years / 180,000 miles. [32]